. >> several top defense officials will speak as well as president obama. let's get the latest now from fox 5's melanie alnwick. >> reporter: the president and first lady will have a moment of silence and then travel here to the pentagon for the september 11th memorial ceremony. here's a look at how things are going to go this morning. at 9:30 president obama will lay a wreath and we'll hear the national anthem. 9:37 is the moment of silence to mark when the plane hit the pentagon. there'll be remarks by the president and defense officials and then a rendition of "america the beautiful." it left dulles airport at 8:20 a.m. instead five hijackers took over the plane and turned it around and crashed into the pentagon at 9:37 a.m. killing all 56 passengers as well as the hijackers. it hit on the western side and one section of the building collapsed. 125 workers here that day were also killed and many of them civilians, the memorial was completed and open to the public in 2008. the seventh anniversary of the attacks. it's usually own 24/7 but today it will be